#1, The area directly surrounding a persons waist to loins which makes up the "booty". OR...#2, The space needed for a persons "booty" to safely navigate a defined are.

#1, Oh man....that girl is so hot.....she may not have any tities,.....but,SHE HAS SOME AWESOME BOOTYSPACE!!! #2, Be warned dude, we are gonna be on red alert when your drunk-ass girlfriend tries to guide her bootyspace out of this crowded bar.